package com.tanhua.dubbo.api;

import com.tanhua.model.mongo.Friend;
import org.apache.dubbo.config.annotation.DubboService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.data.mongodb.core.MongoTemplate;
import org.springframework.data.mongodb.core.query.Criteria;
import org.springframework.data.mongodb.core.query.Query;

import java.util.List;

@DubboService
public class FriendApiImpl implements FriendApi{
    @Autowired
    private MongoTemplate mongoTemplate;


    @Override
    public void save(Long userId, Long friendId) {
        //保存好友数据
        Query query1 = Query.query(Criteria.where("userId").is(userId).and("friendId").is(friendId));
        //判断好友关系是否存在
        if (!mongoTemplate.exists(query1, Friend.class)){
            // 如果不存在 保存
            Friend friend = new Friend();
            friend.setUserId(userId);
            friend.setFriendId(friendId);
            friend.setCreated(System.currentTimeMillis());
            mongoTemplate.save(friend);
        }

        //保存好友数据
        Query query2 = Query.query(Criteria.where("userId").is(friendId).and("friendId").is(userId));
        if (!mongoTemplate.exists(query2,Friend.class)){
            Friend friend = new Friend();
            friend.setUserId(friendId);
            friend.setFriendId(userId);
            friend.setCreated(System.currentTimeMillis());
            mongoTemplate.save(friend);
        }


    }

    /**
     * 分页查询联系人列表
     * */
    @Override
    public List<Friend> findByUserId(Long userId, Integer page, Integer pagesize) {
        Criteria criteria = Criteria.where("userId").is(userId);
        Query query = Query.query(criteria).skip((page-1)*pagesize).limit(pagesize).with(Sort.by(Sort.Order.desc("created")));
        return mongoTemplate.find(query,Friend.class);
    }

    /**
     * 删除好友
    * */
    @Override
    public void delete(Long userId, Long friendId) {
        Query query = Query.query(Criteria.where("userId").is(userId).and("friendId").is(friendId));

        if (mongoTemplate.exists(query,Friend.class)){
            mongoTemplate.remove(query);
        }

        Query query2 = Query.query(Criteria.where("userId").is(friendId).and("friendId").is(userId));

        if (mongoTemplate.exists(query2,Friend.class)){
            mongoTemplate.remove(query2);
        }
    }
}
